Pinch lock



0. C. SARE PINCH LOCK April 19, 1949.

Filed Dec. 11, 1944 INVENTOR. O/V'flQS/HPE,

Patented Apr. 19, 1949 PINCH LOCK Otto C. Sare, Ravenswo Atkins and Company,

poration of Indiana d, Ind., assignor to E. 0.

Indianapolis, Ind., a cor- Application December 11, 1944, Serial No. 567,708

The object of my invention is to provide efficient means for locking together two telescoped members in such manner as to resist relative movement in one direction only.

The accompanying drawings illustrate my invention.

Fig. 1 is a side elevation of my invention embodied in a saw frame; and

Fig. 2 is a vertical section on a larger scale.

In the drawings l0 and II indicate two elements of a saw frame of common form, one end of the inner member [0 being telescoped within the adjacent outer member I I.

In order that these two members may be held, in one direction, against relative movement, so that the overall length of the frame may be adjusted to receive saw blades of different lengths, I provide the novel locking collar 13 which is sleeved upon the inner member l0 and provided with a lip l4 engageable by the adjacent end of the outer member H and canted so as to bite into member Ill at diametrically opposite points so as to resist further movement of member II on member ID.

Collar l3 has internal dimensions such as to provide a loose sliding fit on member .lll, and the ends of the collar lie in planes at a substantial angle to the axis of the collar and are so axially spaced as to provide two biting edges and IS in a plane substantially normal to the axis of the collar, edge 16 being at the end of the collar remote from lip l4.

Lip I4 is formed by outwardly displacing a portion of the wall of the collar on the same side of the collar as edge I6, this displacement at the free end of the lip being suflicient to permit the entry of the adjacent end of the outer member ll between the lip and member ID.

The two members Ill and H having been relatively telescoped to provide a desired overall length, collar I3 is driven along member In to cause its lip 14 to override member II and is thereby canted on member Ill so as to cause the two diametrically opposite edges l5 and I6 of the collar 13 to bite into member Ill and thus resist further telescoping of the two members Ill and II.

It will be noted that, the collar being cut on the bias, relative to its axis, the lip I4 may be formed within the overall length of the whole 3 Claims. (Cl. 287-58) body collar. The collar-engaging end of the member Il may, therefore, lie square with the axis of the member while being, at the same time, capable of underriding the lip of the collar.

If the two ends of the collar lay in planes substantially normal to the axis of the collar, lip l4 would necessarily have to extend axially beyond the main body of the collar in order to cooperate with a square-end telescoping member. By forming my locking collar in the manner stated, i. e., cut on the bias relative to the collar axis, there is a considerable saving of material as well as a more advantageous relative arrangement of the two biting edges l5 and I6.

I claim as my invention:

1. As an article of manufacture, a pinch collar having its two ends in planes lying at a substantial diagonal angle to the axis of the collar with a portion of the main body at one of the acute angles outwardly displaced.

2. As an article of manufacture, a pinch collar having'its two ends in parallel planes lying at a substantial diagonal angle to the aXis of the collar with a portion of the main body at one of the acute angles outwardly displaced, the two edges at the obtuse angles lying in a plane substantially normal to the axis of the collar.

3. The combination with two telescoped members, of a pinch collar sleeved on the inner one of said members and comprising a main body having its two ends lying in parallel planes at a substantial angle to the axis of the collar and at one of the acute angles outwardly displaced, the outward displacement at the free edge being suflicient to permit overriding of the adjacent end'of the outer telescoped member.

O'I'IO C. SARE.

REFERENCES CITED The following references are of record in the I file of this patent:

UNITED STATES PATENTS 

